Elections / 1990 · Senate · IL
The Democratic candidate won Illinois's Senate seat D+30.1.
Illinois, 1990. Party-level statewide totals below — candidate names join when the raw MEDSL store is re-fetched with name columns.
Illinois — 1990 Senate result
Source: MIT Election Data + Science Lab, 1976–2024 Senate returns (party-classified by literal ballot party).
Democratic (D)
2,115,377
65.1%
Republican (R)
1,135,628
34.9%
All others
0
0.0%
Margin
D+30.1
Illinois's Senate margins
Every contest in our store, 1978–2022
| Year | Margin (D minus R) |
|---|---|
| 1978 | −7.9% |
| 1980 | +13.5% |
| 1984 | +1.9% |
| 1986 | +31.4% |
| 1990 | +30.1% |
| 1992 | +10.2% |
| 1996 | +15.4% |
| 1998 | −2.9% |
| 2002 | +22.3% |
| 2004 | +42.9% |
| 2008 | +39.3% |
| 2010 | −1.6% |
| 2014 | +10.9% |
| 2016 | +15.1% |
| 2020 | +16.1% |
| 2022 | +15.3% |